SIST EN ISO 8331:2012
(Main)Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance (ISO 8331:2007)
Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use and maintenance (ISO 8331:2007)
ISO 8331:2007 sets out recommendations designed to maintain rubber and plastics hoses and hose assemblies, prior to use, in a condition as close as possible to the condition they were in when they were received and to obtain the expected service life.
Gummi- und Kunststoffschläuche und Schlauchleitungen - Richtlinien für die Auswahl, Lagerung, Verwendung und Wartung (ISO 8331:2007)
Diese Internationale Norm gibt Empfehlungen, die dazu ausgelegt sind, um Gummi- und Kunststoffschläuche sowie Schlauchleitungen vor der Verwendung unter Bedingungen instand zu halten, die soweit möglich den Bedingungen bei Lieferung entsprechen sollen, und um die erwartete Betriebsdauer zu erreichen.
ANMERKUNG Es ist vorgesehen, dass diese Internationale Norm gemeinsam mit geltenden nationalen gesetzlichen Vorschriften angewendet wird.
Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la sélection, le stockage, l'utilisation et la maintenance (ISO 8331:2007)
L'ISO 8331:2007 établit des recommandations pour conserver les tuyaux et flexibles en caoutchouc et en plastique, avant leur utilisation, dans un état aussi proche que possible de leur état lors de la réception et pour obtenir la durée de vie prévue.
Gumene in polimerne cevi ter cevni priključki - Smernice za izbiro, skladiščenje, uporabo in vzdrževanje (ISO 8331:2007)
Ta mednarodni standard določa priporočila za vzdrževanje gumenih in polimernih cevi ter cevnih priključkov pred uporabo v stanju, ki je čim bolj podobno stanju, v katerem so bili ob prevzemu, in doseganju pričakovane življenjske dobe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 8331:2012
01-januar-2012
*XPHQHLQSROLPHUQHFHYLWHUFHYQLSULNOMXþNL6PHUQLFH]DL]ELURVNODGLãþHQMH
XSRUDERLQY]GUåHYDQMH ,62
Rubber and plastics hoses and hose assemblies - Guidelines for selection, storage, use
and maintenance (ISO 8331:2007)
Gummi- und Kunststoffschläuche und Schlauchleitungen - Richtlinien für die Auswahl,
Lagerung, Verwendung und Wartung (ISO 8331:2007)
Tuyaux et flexibles en caoutchouc et en plastique - Lignes directrices pour la sélection, le
stockage, l'utilisation et la maintenance (ISO 8331:2007)
Ta slovenski standard je istoveten z: EN ISO 8331:2011
ICS:
83.140.40 Gumene cevi Hoses
SIST EN ISO 8331:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 8331:2012
---------------------- Page: 2 ----------------------
SIST EN ISO 8331:2012
EUROPEAN STANDARD
EN ISO 8331
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2011
ICS 23.040.70
English Version
Rubber and plastics hoses and hose assemblies - Guidelines for
selection, storage, use and maintenance (ISO 8331:2007)
Tuyaux et flexibles en caoutchouc et en plastique - Lignes Gummi- und Kunststoffschläuche und Schlauchleitungen -
directrices pour la sélection, le stockage, l'utilisation et la Richtlinien für die Auswahl, Lagerung, Verwendung und
maintenance (ISO 8331:2007) Wartung (ISO 8331:2007)
This European Standard was approved by CEN on 15 April 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8331:2011: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 8331:2012
EN ISO 8331:2011 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 8331:2012
EN ISO 8331:2011 (E)
Foreword
The text of ISO 8331:2007 has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber
products” of the International Organization for Standardization (ISO) and has been taken over as
EN ISO 8331:2011 by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”
the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by November 2011, and conflicting national standards shall be withdrawn
at the latest by November 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 8331:2007 has been approved by CEN as a EN ISO 8331:2011 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 8331:2012
---------------------- Page: 6 ----------------------
SIST EN ISO 8331:2012
INTERNATIONAL ISO
STANDARD 8331
Second edition
2007-05-01
Rubber and plastics hoses and hose
assemblies — Guidelines for selection,
storage, use and maintenance
Tuyaux et flexibles en caoutchouc et en plastique — Lignes directrices
pour la sélection, le stockage, l'utilisation et la maintenance
Reference number
ISO 8331:2007(E)
©
ISO 2007
---------------------- Page: 7 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall
not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the
unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2007
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
©
ii ISO 2007 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 General recommendations . 1
3.1 Selection criteria . 1
3.2 Storage conditions . 2
3.3 Use and maintenance . 4
4 Additional recommendations for specific applications . 6
4.1 General . 6
4.2 Welding and gas-cutting hoses . 6
4.3 Steam hoses . 6
4.4 Hoses for the conveyance of foodstuffs and drinking water . 7
4.5 Hoses for the conveyance of abrasive products . 7
4.6 Hoses for the conveyance of corrosive or aggressive products . 7
4.7 Hoses for the conveyance of flammable products . 7
4.8 Automotive hoses . 8
4.9 Hydraulic hoses . 8
4.10 Fire-fighting hoses . 8
4.11 Oil-industry hoses and hose assemblies . 10
Bibliography . 12
©
ISO 2007 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 8331 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1,
Hoses (rubber and plastics).
This second edition cancels and replaces the first edition (ISO 8331:1991), which has been technically revised.
©
iv ISO 2007 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 8331:2012
INTERNATIONAL STANDARD ISO 8331:2007(E)
Rubber and plastics hoses and hose assemblies — Guidelines
for selection, storage, use and maintenance
1Scope
This International Standard sets out recommendations designed to maintain rubber and plastics hoses and
hose assemblies, prior to use, in a condition as close as possible to the condition they were in when they were
received and to obtain the expected service life.
NOTE It is intended that this International Standard be used in conjunction with any applicable national statutory
regulations.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 2230, Rubber products — Guidelines for storage
ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical properties
ISO/TR 17165-2, Hydraulic fluid power — Hose assemblies — Part 2: Recommended practices for hydraulic
hose assemblies
3 General recommendations
3.1 Selection criteria
It is in the best interests of the user to select hoses or hose assemblies complying with national or international
standards whenever such standards exist for the intended application. For applications outside the scope of
such standards, needing special requirements or for which the necessary information is not available, the hose
manufacturer or trade association should be consulted.
The following points should be taken into consideration when selecting a hose or hose assembly for a specific
application:
a) Operational environment:
— ambient temperature;
— atmospheric conditions;
— contact with chemically aggressive liquids;
— contact with other deleterious media.
©
ISO 2007 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
b) Media conveyed:
—liquid;
— gaseous;
—solids;
— combinations of the above.
c) Method of conveyance:
— pressure (including rate of flow);
— suction (including rate of flow);
— gravity (including rate of flow);
— assisted (mixture of solid/fluid, solid/air).
d) Operating conditions:
— pressure and temperature of product conveyed;
— frequency of use.
e) Installation:
— degree of curvature (minimum bend radius);
— vibration of system;
— risk of damage by impact and abrasion;
— use of correct type of connection;
— type of movement and frequency.
3.2 Storage conditions
3.2.1 General
During storage, especially for long periods, and when hoses and hose assemblies are exposed to certain
adverse influences, the physical properties of hoses and hose assemblies can undergo changes that may result
in them no longer having the optimum characteristics corresponding to their application when they are put into
service. The storage conditions should be such as will offer maximum protection and minimize deterioration of
the articles during storage.
3.2.2 Storage period
The storage period should be kept to a minimum. Rotation of stock is therefore essential and the “first-in
first-out” rule applied. For long-term storage, refer to ISO 2230 for storage time and conditions. Items 3.2.3 to
3.2.8 are covered in ISO 2230 and are shown here for convenience only.
3.2.3 Temperature
◦
The storage temperature should be below 25 C and articles stored away from direct heat sources. Storage
◦ ◦
above 25 C may shorten the life of the hose. Articles should not be subjected to temperatures over 50 C or
◦
below − 30 C or to abnormal fluctuations in temperature during the storage period. See ISO 2230 for
information on the effect of higher and lower temperatures on the storage time.
3.2.4 Humidity
The relative humidity should not exceed 70 % (see ISO 2230 for details).
©
2 ISO 2007 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
3.2.5 Light
The articles should be stored in a dark place away from sunlight and strong artificial light. If the storage area has
windows or glazed openings, they should be obscured with red, orange or white coverings.
3.2.6 Ozone
Due to the harmful effect of ozone on rubber-based articles, storage areas should not contain equipment
capable of generating ozone, for example mercury vapour lamps or tubes, high-voltage electrical equipment,
electric motors or other equipment likely to cause sparks or electrical discharges.
3.2.7 Environment
Articles should not be placed in contact with certain products or exposed to their vapours, particularly solvents,
oils, greases, acids, disinfectants, etc. Some metals, such as copper, iron and manganese, have a harmful
effect on certain rubber compounds.
3.2.8 Sources of heat
Articles should not be stored in close proximity to heat sources. The distance between the articles and the heat
sources should be sufficient to ensure compliance with the recommendations of 3.2.3.
3.2.9 Electric and magnetic fields
Storage areas should not be in the vicinity of equipment that may generate electric or magnetic fields, as
variations/fluctuations in such fields could induce currents in metallic joints, which in turn generate heat.
3.2.10 Method of storing
Articles should be stored in such a way that they are not subjected to excessive stress, elongation or
deformation. Contact with sharp, pointed or abrasive objects or surfaces should be avoided, and storage racks
should be provided whenever possible.
Coiled hose or hose assemblies should be stored flat and preferably not stacked. When stacking is unavoidable,
the height of the stack should be restricted so that the articles at the bottom do not suffer permanent
deformation. The hanging of coils on pegs is not recommended. Hoses and hose assemblies supplied in
straight lengths should be stored flat and unbent. End caps should be kept on hoses supplied with them.
3.2.11 Rodents
Articles should be secure from attack by rodents, and adequate protection should be provided if there are any
risks.
3.2.12 Issue from storage
Care should be taken to ensure that articles issued from stock are in their correct condition and correspond to
their intended application. Identification of the different types in stock is essential. Hose assemblies which do
not have permanent end fittings, i.e. those with clipping/clamping arrangements that can be adjusted, should be
checked to ensure that the end fittings are secure.
3.2.13 Return to storage
Before being returned to storage, articles which have been withdrawn from service should be drained of the
substance they have been used to convey. Special care should be exercised with hoses that have been used to
transport chemical, explosive, flammable or corrosive products. After cleaning and before return to storage, the
articles should be examined to establish their suitability for continued use.
©
ISO 2007 – All rights reserved 3
---------------------- Page: 13 ----------------------
SIST EN ISO 8331:2012
ISO 8331:2007(E)
3.3 Use and maintenance
3.3.1 Handling
Hoses and hose assemblies should always be handled with care. They should not be dragged over sharp or
abrasive surfaces. They should not be subjected to kinking or flattening, for example by being run over by
vehicles.
3.3.2 Pressure
Articles should not be subjected to pressures, including surge pressures, in excess of the specified maximum
working pressure.
3.3.3 Temperature
Articles are not be used at temperatures, either conveyed-product temperatures or environmental
temperatures, outside the range specified or recommended by the manufacturer.
3.3.4 Products conveyed
Hoses and hose assemblies should only be used for conveying the products for which they are designed. If
there is doubt regarding the suitability, the hose manufacturer should be consulted. When potentially dangerous
(for example toxic, corrosive, explosive or flammable) products are being conveyed, precautions to minimize the
effects of spillage due to leakage should be taken and it is recommended that, when not in use, hoses and hose
assemblies should not remain filled.
3.3.5 Environment
Hoses and hose assemblies should not be used in environments other than those for which they were designed.
If there is doubt regarding the suitability of the environment, or if unusual or variable conditions are experienced,
the manufacturer should be consulted.
3.3.6 Bending radii
Hoses and hose assemblies should not be used with bends less than the minimum bend radius specified or
recommended by the manufacturer a
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.